Quality Tools
7 Quality Tools
Cause-Effect Diagrams
Flow Charts
The 7 Quality Tools for Process Improvements
Pareto Chart
Where did the Basic Seven come from?
Kaoru Ishikawa
• Known for “Democratizing Statistics” • The Basic Seven Tools made statistical analysis less complicated for the average person • Good Visual Aids make statistical and quality control more comprehendible.
What Is a Flowchart?
A diagram that uses graphic symbols to depict the nature and flow of the steps in a process.
Benefits of Using Flowcharts
• Promote process understanding • Provide tool for training • Identify problem areas and improvement opportunities
" Draw a flowchart for whatever you do. Until you do, you do not know
what you are doing, you just have a job.” -- Dr. W. Edwards Deming.
Keys to Success
• • • • • Start with the big picture Observe the current process Record process steps Arrange the sequence of steps Draw the Flowchart
What Is a Cause and Effect Diagram?
A graphic tool that helps identify, sort, and display possible causes of a problem or quality characteristic.
Benefits of Using a Cause-and-Effect Diagram
• • • • • • Helps determine root causes Encourages group participation Uses an orderly, easy-to-read format Indicates possible causes of variation Increases process knowledge Identifies areas for collecting data
Data Collection
• • • • Where What Who How
Shifts
√√√
Defect Type
√√√√ √√√ √√√√ √√
√
√√√
√√
√√√ √
Pareto Principle
• Vilfredo Pareto (1848-1923) Italian economist
– 20% of the population has 80% of the wealth
• adapted by Joseph Juran.
• Remember the 80/20 rule states that approximately 80% of the problems are created by approximately 20% of the causes.
Pareto Charts
Acme Pizza
Slices 0 1 2 3 4 5 6 7 Frequency 1 33 65 8 12 0 0 1 % 0.3 13.09 25.79 3.17 4.76 0 0 0.3
Acme Pizza
• The completed Pareto Analysis results in the following:
# times ordered
70
Cause-Effect Diagrams
Flow Charts
The 7 Quality Tools for Process Improvements
Pareto Chart
Where did the Basic Seven come from?
Kaoru Ishikawa
• Known for “Democratizing Statistics” • The Basic Seven Tools made statistical analysis less complicated for the average person • Good Visual Aids make statistical and quality control more comprehendible.
What Is a Flowchart?
A diagram that uses graphic symbols to depict the nature and flow of the steps in a process.
Benefits of Using Flowcharts
• Promote process understanding • Provide tool for training • Identify problem areas and improvement opportunities
" Draw a flowchart for whatever you do. Until you do, you do not know
what you are doing, you just have a job.” -- Dr. W. Edwards Deming.
Keys to Success
• • • • • Start with the big picture Observe the current process Record process steps Arrange the sequence of steps Draw the Flowchart
What Is a Cause and Effect Diagram?
A graphic tool that helps identify, sort, and display possible causes of a problem or quality characteristic.
Benefits of Using a Cause-and-Effect Diagram
• • • • • • Helps determine root causes Encourages group participation Uses an orderly, easy-to-read format Indicates possible causes of variation Increases process knowledge Identifies areas for collecting data
Data Collection
• • • • Where What Who How
Shifts
√√√
Defect Type
√√√√ √√√ √√√√ √√
√
√√√
√√
√√√ √
Pareto Principle
• Vilfredo Pareto (1848-1923) Italian economist
– 20% of the population has 80% of the wealth
• adapted by Joseph Juran.
• Remember the 80/20 rule states that approximately 80% of the problems are created by approximately 20% of the causes.
Pareto Charts
Acme Pizza
Slices 0 1 2 3 4 5 6 7 Frequency 1 33 65 8 12 0 0 1 % 0.3 13.09 25.79 3.17 4.76 0 0 0.3
Acme Pizza
• The completed Pareto Analysis results in the following:
# times ordered
70